3) Calculate the pH of the following solutions: a) a
solution that is 0.20 M in HBrO and 0.10 M in KBrO; b) a solution that is 0.030
M in HCN and 0.050 M in NaCN.

4) Which of the following solutions can function as a
buffer solution and calculate the pH of the ones that are buffers: a) equal
volumes of 0.10 M HCl and 0.10 M NaCl; b) a solution that is 0.10 M C5H5N
and 0.10 M C5H5NHCl; c) a solution that is made from equal
volumes of 0.20 M CH3COOH and 0.10 M NaOH.

5) For each pH calculated above, pick the indicator(s)
whose color changing point is closest to the pH found.